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United StatesThe weather in August in Juneau
It's cool to moderate in August in Juneau with an average temperature of 17°C. Temperatures this month range from a low of 15°C to a high of 21°C. At night, you can expect temperatures between 10°C and 15°C.
Looking for sun and warm weather? August isn’t a good month to be in Juneau. The temperatures are too low for a warm stay this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in August for Juneau, Alaska. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 28°C in 2019, Juneau reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 10°C in 2015. The extreme nighttime temperatures ranged from a lowest recorded value of 5°C to a highest value of 18°C.
Rainfall amount
In August, there is an average of 242 mm of precipitation, spread over 24 days. The wind speed is around 3 Bft, mostly coming from the South.
Daily weather in August for Juneau
Click on any day in August to get detailed info about the usual weather on that day in Juneau. Check out the historical temperatures and precipitation over the past 10 years on this day.
August weather comparison
| Juneau | New York | |
|---|---|---|
| Average temperature | 17°C | 30°C |
| Max. temperature | 21°C | 31°C |
| Min. temperature | 10°C | -5°C |
| Total precipitation | 242 mm | 79 mm |
| Rainy days | 24 days | 13 days |
Start of August
The month of August starts in Juneau with mild temps, averaging around 20°C during the day and nights around 14°C.
Mid August
By mid-August, daytime temps drop to around 17°C, with nights around 13°C. There’s a high chance of precipitation during this time.
End of August
By the end of August, the average daytime temperature in Juneau is around 16°C, while nighttime temps are about 11°C. There’s a significant chance of many days with precipitation.
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UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Check out the climate of Juneau for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in August in Juneau, Alaska. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in August in Juneau
Temperature in August in Juneau over the years
Precipitation charts
These charts show the average amount of precipitation in August in Juneau, Alaska. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in August in Juneau
Total precipitation in August in Juneau over the years
Daily UV index in August in Juneau
This chart shows the average daily UV index in August in Juneau, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in August in Juneau
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Average weather in Juneau by month
Click on a month below to see detailed weather info for Juneau. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.